HEPData Search

The total photoabsorption cross section for 4He has been measured for the first time over a wide photon energy range (200 MeV<~Eγ<~800 MeV). By using the large acceptance detector DAPHNE at the tagged photon facility of the MAMI microtron in Mainz high precision results with small systematic errors were obtained. This measurement shows that 4He has a behavior similar to heavy nuclei and, in particular, a reduction of the cross section with respect to the lighter nuclei is found for Eγ>600 MeV.

1 data table

Table 1

No description provided.

Total cross-section measurement for the three double pion production channels on the proton

Braghieri, A ; Murphy, L.Y ; Ahrens, J ; et al.

Phys.Lett.B 363 (1995) 46-50, 1995.

Inspire Record 382744 DOI 10.17182/hepdata.28464

The total cross sections for the three γp → Nππ reactions have been measured for photon energies from 400 to 800 MeV. The γ p → p π 0 π 0 and γ p → n π + π 0 cross sections have never been measured before while the γ p → p π + π − results are much improved compared to earlier data. These measurements were performed with the large acceptance hadronic detector DAPHNE, at the tagged photon beam facility of the MAMI microtron in Mainz.

3 data tables

Table 1

No description provided.

Table 2

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Table 3

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Total cross section measurement of the gamma n --> p pi- pi0 reaction.

Zabrodin, A. ; Audit, G. ; Beck, R. ; et al.

Phys.Rev.C 55 (1997) R1617-R1620, 1997.

Inspire Record 439886 DOI 10.17182/hepdata.47015

The total cross section for the γn→pπ−π0 reaction has been measured over the photon energy range 450–800 MeV at the 855 MeV MAMI Microtron in Mainz with the large acceptance detector DAPHNE and using a deuterium target. As expected, this reaction has a very similar cross section to the γp→nπ+π0 channel and its amplitude is strongly underestimated by the existing double pion photoproduction models.

1 data table

Table 1

No description provided.

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CROSS-SECTIONS OF EXCLUSIVE REACTIONS IN ANTI-P P INTERACTIONS AT 32-GEV/C. (IN RUSSIAN)

INCLUSIVE PRODUCTION OF gamma QUANTA AND pi0 MESONS IN anti-p p INTERACTIONS AT 32-GeV/c

STUDY OF DIFFRACTIVE PROCESSES IN EXCLUSIVE CHANNEL anti-p p ---> anti-p p (2 pi+) (2 pi-) AT 32-GeV/c

Inclusive production of rho(770)0 and f2(1270) resonances in p p and anti-p p interactions at 32-GeV/c

CROSS-SECTION OF PARTICLE DIFFRACTIVE PRODUCTION IN ANTI-P P INTERACTIONS AT 32-GEV/C. (IN RUSSIAN)

Study of Neutral Strange Particle Production in $p p$ Interactions at 32-{GeV}/$c$ and Comparison With $\bar{p} p$ Data

Study of the inclusive production of strange boson resonances in anti-p p interactions at 32-GeV/c.

Total photoabsorption cross-section for He-4 from 200-MeV to 800-MeV

Total cross-section measurement for the three double pion production channels on the proton

Total cross section measurement of the gamma n --> p pi- pi0 reaction.